CODEWITHSUNDEEP
pythonpython-2.7tkinter
user3663720
user3663720

Reputation: 305

Can I use a loop to quicky produce x amount of checkbuttons?

Is it possible to iterate the production of 3 checkbuttons in TkInter. For instance I seperatly create my 3 buttons below, but can I simplify this code by running a loop, if BtnLst is defined as so. 

    BtnLst = ["Power", "Temperature", "Sunlight"]
    #####Loop here?

...

    C1 = Checkbutton(frame, text = "Power",\
             onvalue = 1, offvalue = 0, height=1, \
             width = 10)
    C1.pack(side=LEFT)
    C2 = Checkbutton(frame, text = "Temperature",\
             onvalue = 1, offvalue = 0, height=1, \
             width = 10)
    C2.pack(side=LEFT,padx =5, ipadx=12)
    C3 = Checkbutton(frame, text = "Sunlight",\
             onvalue = 1, offvalue = 0, height=1, \
             width = 10)
    C3.pack(side=LEFT)

Is this even possible in tkinter because I have defined all 3 buttons separately?

Upvotes: 1

Views: 73

Answers (2)

Kevin
Kevin

Reputation: 76264

Sure, it's simple.

for name in BtnLst:
    button = Checkbutton(frame, text=name, onvalue = 1, offvalue = 0, height=1, width = 10)
    button.pack(side=LEFT)

If each element has its own unique text, configuration options, and callback functions, you can still create them in a list, but you need to hold each of these things in a collection while you iterate. I don't recomend doing this if you only have three buttons; since you're making three lists, you're not really gaining anything complexity wise. It might still be worth doing if you have, say, 30 buttons or something.

names = ["Power", "Temperature", "Sunlight"]
callbacks = [SomeOtherClass.foo, SomeOtherClass.bar, SomeOtherClass.baz]
pack_options = [{}, {"padx": 5, "ipadx":12}, {}]
for name, callback, pack_options in zip(names, callbacks, pack_options):
    button = Checkbutton(frame, text=name, onvalue = 1, offvalue = 0, height=1, width = 10, command=callback)
    button.pack(side=LEFT, **pack_options)

Upvotes: 5

chepner
chepner

Reputation: 532518

Use a list comprehension to create a list of buttons:

C = [Checkbutton(frame, text=x, onvalue=1, offvalue=0, height=1, width = 10)
      for x in BtnList]

Then pack them as necessary.

C[0].pack(side=LEFT)
C[1].pack(side=LEFT, padx=5, ipadx=12)
C[2].pack(side=LEFT)

Upvotes: 1

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